Address review: self-contained samples, fixture registration, scoped feature routing

- Declare the sample table in both companions so each compiles on its own.
- Register no-changecompany-in-upgrade and changecompany-runs-triggers-in-the-calling-company in review-fixtures.json.
- Limit the Feature Data Update rule to UpdateData/AfterUpdate and their reachable helpers; read-only IsDataUpdateRequired/ReviewData preflight is permitted and shown as a clean control.
- Add feature data update execution to al-upgrade-review applicability and not-applicable scope.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

microsoft/knowledge/upgrade/no-changecompany-in-upgrade.bad.al

@@ -1,3 +1,20 @@
+table 50263 "Sales Order Ext"
+{
+    DataClassification = CustomerContent;
+
+    fields
+    {
+        field(1; "No."; Code[20]) { }
+        field(2; "Shipping Agent Code"; Code[10]) { TableRelation = "Shipping Agent"; }
+        field(3; "Legacy Carrier Code"; Code[10]) { }
+    }
+
+    keys
+    {
+        key(PK; "No.") { Clustered = true; }
+    }
+}
+
 codeunit 50261 "Upgrade All Companies"
 {
     Subtype = Upgrade;